- Author: Brad Hanson
A quick post today with information about MSMA herbicides. There has been concern and lack of certainty about the registration status of MSMA and other organic arsenical herbicides. I was forwarded the attached press release and current labels for MSMA 6.6 and MSMA 6 Plus.
For those that may not know, MSMA (monosodium acid methanearsonate)is a product used in cotton, golf courses and sod farms, and rights of way.
The red text below is copied from the attached press release.
February 20, 2013
- Author: Brad Hanson
The Spring 2012 edition of UCNFA News, the online newsletter for the UC Nursery and Floriculture Alliance, is now available for viewing. This issue focuses on weeds and weed management for nursery and floricultural operations.
To view or download the newsletter in PDF format go to this link: http://ucanr.org/sites/UCNFAnews/Download_Newsletter_PDF/?newsitem=42782/span>
- Author: Clyde Elmore, Extension Weed Specialist (Emeritus)
- Posted By: Gale Perez
We have all heard that turf grass is competitive to weeds and other plants in the landscape. There are several turf grass types grown in California. In southern California, Bermuda grass is the more common planting though Turf-type tall fesc ue is also used as well as other species to a lesser extent. Smooth and large crabgrass are the most prevalent summer annual grass weeds found in turfgrass in California. Can we devise systems using turf type, renovation (planting) time to establish a competitive, cool season, tall fescue turf and control crabgrass?
Several years ago with graduate student J. Graham Davis, and current farm advisor in Napa County, John Roncoroni, we developed experiments to study this concept. We chose...
- Posted By: John A Roncoroni
- Written by: John Roncoroni
Field Bindweed (Convolvulus arvensis)
The late spring rains that fell in Northern California seemed to benefit some plants more than others. One weed that appears to be doing very well this year is Field bindweed. Field bindweed (Convolvulus arvensis), is a perennial weed that spreads by seed, creeping roots and rhizomes. You may call it morningglory or wire weed. It has arrow-shaped leaves and white to pink trumpet-shaped flowers and can grow spread along the ground from early spring until late fall. Bindweed’s creeping roots can penetrate the soil to more than 10 feet and send up vertical shoots that look much like seedlings, but unlike seedlings, are part of a much larger plant. Studies...
- Posted By: Cheryl A. Wilen
- Written by: Cheryl Wilen, Area Integrated Pest Management Advisor
What the …?? Where’s this coming from and what does that have to do with weeds?
A few years ago, I noticed that when I was wearing my cool polarized sunglasses it was like I had a superpower for spotting smooth crabgrass in turf. I haven’t done a lot of research on this but it appears that the light reflected (or absorbed, defending on your figurative point of view) makes crabgrass pop out. At least it does in tall fescue. I haven’t had a chance to do much other observational work with other turf species. At any rate, with a little practice, I found that could pick out a single crabgrass seedling in an area of tall fescue from 10 feet away. This is slightly similar to how automated weed spot sprayers work except their...